Abstract
Let \(\pi \) be an irreducible admissible representation of \(GL_m(F)\), where F is a non-archimedean local field of characteristic zero. In 1990’s Jacquet and Shalika established an integral representation for the exterior square L-function. We complete, following the method developed by Cogdell and Piatetski-Shapiro, the computation of the local exterior square L-function \(L(s,\pi ,\wedge ^2)\) via the integral representation in terms of L-functions of supercuspidal representations by a purely local argument. With this result, we show the equality of the local analytic L-functions \(L(s,\pi ,\wedge ^2)\) via the integral representation for the irreducible admissible representation \(\pi \) for \(GL_m(F)\) and the local arithmetic L-functions \(L(s, \wedge ^2(\phi (\pi )))\) of its Langlands parameter \(\phi (\pi )\) through local Langlands correspondence.
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Acknowledgements
This work was completed as an extension of the study embarked by Cogdell and Piatetski-Shapiro [8] and owes much to [9] and [28]. This paper is the part of the author’s Ph.D dissertation. He would like to thank his advisor Professor James W. Cogdell for his encouragement and invaluable comments throughout, which helped to improve the exposition of earlier version. Without his help, this paper never have come into existence. Thanks are also due to Professor Nadir Matringe for suggesting me how to prove Proposition 6.1 in [27] and detailed comments to significantly enhance the accuracy of the original manuscript. The author would like to express our sincere appreciation to the referee making incredible suggestions which improved the readability and clarity of this article.
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This research was partially supported by National Science Foundation (NSF) Grant DMS-0968505 through Professor Cogdell.
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Jo, Y. Derivatives and exceptional poles of the local exterior square L-function for \(GL_m\). Math. Z. 294, 1687–1725 (2020). https://doi.org/10.1007/s00209-019-02327-4
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DOI: https://doi.org/10.1007/s00209-019-02327-4
Keywords
- Jacquet–Shalika integral
- Local exterior square L-function
- Exceptional poles
- Bernstein–Zelevinsky derivatives